package org.example.jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

/**
 * 修改密码功能：
 * 程序运行后。终端提示：      请输入用户名：     请输入新密码      结果  修改密码成功  该用户不存在
 */
public class Demo02JDBC {
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        Class.forName("com.mysql.cj.jdbc.Driver");
        Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true", "root", "root");
        Statement statement = connection.createStatement();
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名：");
        String username = scanner.nextLine();
        System.out.println("请输入新密码：");
        String password = scanner.nextLine();
        int i = statement.executeUpdate("UPDATE user SET password ='" + password + "' WHERE username = '" + username + "'");
        if (i>0){
            System.out.println("修改密码成功！");
        }else {
            System.out.println("该用户不存在！");
        }
        connection.close();
    }
}
